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Autoscrape API vs Userstack

Same instrument, two spec sheets — measured, not claimed.

APIAutoscrape APIDEAD0UserstackHEALTHY96
Uptime · 30d
Uptime · 90d44.4%99.44%
Uptime · 30d0.0%100%
P50 · ms696266
P95 · ms14443029
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Autoscrape API vs Userstack: common questions

Which is more reliable, Autoscrape API or Userstack?

On our scheduled checks, Userstack leads on measured uptime — Autoscrape API at 44.4% versus Userstack at 99.44% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Autoscrape API or Userstack?

Userstack has the lower median latency in our checks — Autoscrape API responds in 696 ms versus Userstack at 266 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Autoscrape API and Userstack need an API key?

Autoscrape API needs no key, while Userstack requires a free API key. If you want to start calling without signup, reach for Autoscrape API first.

Can I call Autoscrape API and Userstack from the browser?

Only Userstack is browser-friendly — it returns CORS headers over HTTPS. Autoscrape API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Autoscrape API and Userstack free for commercial use?

Autoscrape API has unclear commercial terms, and Userstack has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.